GB392436A - Improvements in and relating to electric oscillation generators - Google Patents
Improvements in and relating to electric oscillation generatorsInfo
- Publication number
- GB392436A GB392436A GB28847/32A GB2884732A GB392436A GB 392436 A GB392436 A GB 392436A GB 28847/32 A GB28847/32 A GB 28847/32A GB 2884732 A GB2884732 A GB 2884732A GB 392436 A GB392436 A GB 392436A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- grid
- crystal
- anode
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000010355 oscillation Effects 0.000 title abstract 3
- 239000013078 crystal Substances 0.000 abstract 4
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/34—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being vacuum tube
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
392,436. Valve generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Meahl, H. R. ; 2, Biglow Avenue, Schenectady, New York, U.S.A.) Oct. 15, 1932, No. 28847. Convention date, Oct. 15, 1931. [Class 40 (v).] To obtain stable working in a crystal-controlled high frequency oscillator the anode of the valve 1, Fig. 1, is coupled to the tuned grid circuit 5, 6 in reversed phase by the coil 8 in such a manner that oscillations could not occur without the inclusion of the piezo-electric crystal 4 in the grid circuit. By this means greatly increased stability results, the anode voltages may be higher and oscillations are independent of the anode-grid capacity which may be eliminated by using a screen-grid valve. The grid circuit 5, 6 is preferably tuned to a frequency of from one quarter to three-quarters of the crystal frequency. A resistance may be provided to match the external anode circuit impedance to the valve impedance and may be varied by connection from condenser 15, Fig. 2. The crystal may be connected between the tuned circuit 5, 6 and the cathode.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US392436XA | 1931-10-15 | 1931-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB392436A true GB392436A (en) | 1933-05-18 |
Family
ID=21904431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28847/32A Expired GB392436A (en) | 1931-10-15 | 1932-10-15 | Improvements in and relating to electric oscillation generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB392436A (en) |
-
1932
- 1932-10-15 GB GB28847/32A patent/GB392436A/en not_active Expired
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